| W | World Outdoor | 46.78 | Kevin Young | USA | 8/6/1992 | Barscelona, ESP |
| A | American | 46.78 | Kevin Young | Foot Locker AC | 8/6/1992 | Barcelona, ESP |
| C | College Outdoor | 47.56 | Rai Benjamin | So. California | 6/8/2018 | Eugene, OR |
| S | School | 50.00 | Donald Douglass | 1978 |
| PL | JD | Athlete | Yr. | Team | Time |
|---|---|---|---|---|---|
| 1 | BLANCHARD, JACKSON | SO | GRAND VALLEY ST. |
51.16 | |
| 2 | WALKER, DANIEL | SR | GRAND VALLEY ST. |
51.27 | |
| 3 | FAGAN, SEAN | FR | HILLSDALE |
53.42 | |
| 4 | ROBERTSON, BRETT | FERRIS ST. |
53.71 | ||
| 5 | PORTER, ALEXANDER | JR | GRAND VALLEY ST. |
54.95 | |
| 6 | FLOWERS, RASHEED | SR | UNATTACHED | 57.58 | |
| 7 | DONALDSON, BRENT | SO | P.F.W. |
58.98 |
| HPL | JD | Athlete | Yr. | Team | Time | Note |
|---|---|---|---|---|---|---|
| 1 | BLANCHARD, JACKSON | SO | GRAND VALLEY ST. | 51.16 | ||
| 2 | WALKER, DANIEL | SR | GRAND VALLEY ST. | 51.27 | ||
| 3 | FAGAN, SEAN | FR | HILLSDALE | 53.42 | ||
| 4 | ROBERTSON, BRETT | FERRIS ST. | 53.71 | |||
| 5 | PORTER, ALEXANDER | JR | GRAND VALLEY ST. | 54.95 | ||
| 6 | FLOWERS, RASHEED | SR | UNATTACHED | 57.58 | ||
| 7 | DONALDSON, BRENT | SO | P.F.W. | 58.98 |